What simple machine can best be described as "a simple machine that uses an inclined plane wrapped around a rod"? a wedge
a screw
a wheel and axle
a lever

The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?

Ball bearings are made by letting spherical drops of molten metal fall inside a talll tower-called a shot tower- and solidify as they fall. a-if a bearing needs 4.0 s to solidify enough for impact, how high must the tower be? b- what is the bearing's impact velocity?

As more bulbs are added to a series circuit what happens to the resistance of the circuit